Summer 1983...Hinamizawa is a tranquil village, but its inhabitants have been plagued by strange deaths and unexplained disappearances seemingly every year. Some say it's the terrifying curse of Hinamizawa's legendary deity, Oyashiro-sama, causing victims to be spirited away by monsters, but is this town harboring dark, horrying secrets even more sinister than any supersition or myth?

An epilogue to Matsuribayashi-hen where Rika and the others, including Hanyū, go on a summer vacation to heal their hearts, so to speak, after everything they have been through.